5mm Flat Top with Frosted Diffused Lens LED - Red LED - Ultra Bright

The 5mm Red LED (Flat Top Frosted) delivers a wide viewing angle for even illumination from off-axis positions — the right choice when you need guitar pedal indicators (boutique/custom builds) and panel displays where clean appearance matters.

The frosted (milky) lens fully obscures the LED die and eliminates any visible bright point, producing the smoothest possible light output. The entire lens glows evenly with no visible internal structure — the premium choice for any application where the LED is directly visible.

Why flat top instead of round top?

A standard round-top 5mm LED has a 15–30 degree beam — bright when viewed straight on, but nearly invisible from the side. The flat top (sometimes called a flat head LED or square LED due to its flat lens face) spreads that light wide, making the LED clearly visible whether you are looking down from a standing position, viewing a panel from across a room, or backlighting a translucent surface that needs even coverage with no hotspots.

Common applications

• Automotive gauge cluster backlighting: brake/warning indicator relamp, taillights. The wide beam eliminates the bright-center/dark-edges problem that round-top LEDs cause behind gauge faces. Drop-in for GM Silverado/Sierra, Honda Civic, Jeep Wrangler TJ, Ford Mustang, and Toyota/Lexus clusters.
• Guitar pedal status indicators: Red is the most common pedal indicator color — immediately signals “effect active” on a dark stage. The flat top is the standard choice on DIYStompboxes, r/diypedals, and The Gear Page. Diffused lens produces a clean, even glow without a blinding hotspot on a dark stage.
• Arcade pushbutton illumination: Lights up the entire translucent button cap (Sanwa, Seimitsu, Happ/IL) with even color instead of a single bright dot. Also used for marquee backlighting in BYOAC cabinet builds.
• Model railroad building interiors: block signal (stop aspect), crossing gate, taillights on G/O scale vehicles. The wide angle fills HO and N scale structure interiors with realistic lighting instead of a spotlight effect.
• Panel indicators and control boxes: Fits standard 5mm LED holders and panel bezels. The wide angle means the indicator is readable from anywhere in front of the panel, not just dead center.
• Breadboard prototyping: The flat top sits stable in a breadboard hole without rocking, and the wide beam is visible from normal desk-level viewing angles.

5mm is the standard size for most flat top applications — direct replacement for T10 wedge bulbs in automotive clusters, standard fit for arcade pushbuttons, and visible at distance for panel indicators.

Standard T-1 3/4 through-hole footprint. Fits all 5mm LED holders, bezels, and panel-mount clips.

Sold individually (1 LED per quantity ordered).